Ecosystems
This term describes a group of organisms of the same species living in the same area.
Population
Many interconnected food chains make up this.
Food Web
This force pulls objects toward Earth’s center.
Gravity
Third planet from the Sun
Earth
What causes the pattern of day and night on Earth?
A. Earth’s revolution around the Sun
B. Earth’s rotation on its axis
C. The Moon’s orbit around Earth
D. Changes in seasons
B. Earth’s rotation on its axis
The community of organisms and their physical environment is called this.
Ecosystem
This relationship benefits both organisms involved.
Mutualism
The imaginary line running through Earth from North to South Pole is called this.
Axis
Outer planets are called
Gas giants
1. Which organism is a producer in a grassland ecosystem?
A. Hawk
B. Rabbit
C. Grass
D. Snake
C. Grass
This type of organism makes its own food using sunlight.
Producer
A relationship where one organism benefits and the other is harmed is called this.
Parasitism
The Sun, planets, and other objects held by gravity form this system.
Solar System
Inner planets are made of mostly...
Why does the Sun appear brighter and larger than other stars in the sky?
It is much closer to Earth.
Animals that eat only plants are called this.
Herbivore
The nonliving parts of an ecosystem are called this.
Abiotic
The Sun is classified as one of these celestial objects.
Star
Earth spins once on its axis in this amount of time.
24 Hours
What do decomposers like fungi and bacteria return to the soil when they break down dead organisms?
Nutrients.
This type of consumer eats both plants and animals.
Omnivore
These organisms break down dead plants and animals.
Decomposers
These are rocky or icy objects that orbit the Sun but aren’t planets.
Asteriods
When a part of Earth is facing away from the Sun it experiences this.
Night
A fox population decreases in an ecosystem. What is most likely to happen to the rabbit population?
The rabbit population will increase.